#!/usr/bin/env python
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# Copyright (c) 2011, Willow Garage, Inc.
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import os
import sys

import roslib.packages

from generate_properties import (is_android_package, UserError,
     get_classpath, get_maven_dependencies,TAG_ROSJAVA_SRC )


def get_eclipse_src_entries(package):
    """
    @return: list of source path locations.  Source paths will be
    returned in the relative specification used in the ros
    manifest.xml file.
    @rtype: [str]
    """
    rospack = roslib.packages.ROSPackages()
    depends = rospack.depends([package])[package]
    elements = []
        
    m = rospack.manifests[package]
    pkg_dir = roslib.packages.get_pkg_dir(package)
    for e in [x for x in m.exports if x.tag == TAG_ROSJAVA_SRC]:
        try:
            #elements.append(os.path.join(pkg_dir, e.attrs['location']))
            # use relative location as Eclipse does not seem to like fully resolved
            elements.append(e.attrs['location'])
        except KeyError:
            sys.stderr.write("Invalid <%s> tag in package %s"%(tag, pkg))
    return elements



def write_eclipse_classpath(package):
    android = is_android_package(package)
    rospack = roslib.packages.ROSPackages()
    maven_depmap = get_maven_dependencies(package, 'dependencies.xml')

    
    sys.stdout.write("""<?xml version="1.0" encoding="UTF-8"?>
<classpath>
""")
    if android:
        sys.stdout.write('\t<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>\n')
        sys.stdout.write('\t<classpathentry kind="src" path="gen"/>\n')

    for p in get_eclipse_src_entries(package):
        if p:
            sys.stdout.write('\t<classpathentry kind="src" path="%s"/>\n'%(p))
    sys.stdout.write("""\t<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/>
""")
    classpath = None
    if android:
        classpath = get_classpath(rospack, package, maven_depmap, scope='compile', include_package=True).split(':')
    else:
        classpath = get_classpath(rospack, package, maven_depmap, scope='all', include_package=True).split(':')
    for p in classpath:
        if p:
            sys.stdout.write('\t<classpathentry kind="lib" path="%s"/>\n'%(p))
    sys.stdout.write("""\t<classpath kind="output" path="build"/>
</classpath>
""")


def usage():
    print """ 
Prints the eclipse .classpath file for a package to stdout

    ./generate_eclipse_classpath.py package_name

    """

def generate_main(argv=None):
    if argv is None:
        argv = sys.argv
    if len(argv) != 2:
        usage()
    package = argv[1]
    write_eclipse_classpath(package)
    
if __name__ == '__main__':
    try:
        generate_main()
    except roslib.packages.InvalidROSPkgException as e:
        sys.stderr.write('ERROR: '+str(e)+'\n')
        sys.exit(1)
    except UserError as ue:
        sys.stderr.write(str(ue)+'\n')
        sys.exit(1)

